Working with Trimble TTM Surface Files


Article Summary

Uploading Trimble TTM files to your site can be helpful in visualizing the TTM surface in relation to the terrain of your site. You can also create surface-to-design volume measurements between the TTM surface and the drone survey, and export an area of your site as a TTM surface. 

Upload a TTM file to your site

From the DESIGNS tab, click IMPORT A DESIGN.

Drag and drop or navigate and select the TTM file you want to upload.


Once imported, you can toggle the file on and off from the DESIGNS tab.

Visualize a TTM surface files

Once imported, view the TTM surface in 3D in relation to the survey.

Measure volumes against TTM surfaces

Use the compare to design measurement tool to calculate the volume between your latest survey data and the design surface. 

Export a measurement as TTM

Areas of a site can be exported as a TTM surface:

  • Outline the area to be exported using the polygon tool.   
  • From the measurement options, select ExportTTM.

Learn more about custom exports.


I still can't do it!

We wrote these articles to equip you with everything you need to get the job done on your own, but we understand that sometimes this isn't sufficient.

If you're stuck, you can connect with our support team by clicking the support button on the top right corner of your user portal.